Thicker Sway Bars

[Alfatango]

Hey does anyone know anyone that still can make thicker front and rear sway bar kits for the 159? I have found that Eibach used to make them? Do you know of anyone else?

[Colin Edwards]

Hi Alfatango,

Definitely focus on bushes and dampers. 
The "roll" you are experiencing in "S style corners" can be reduced a bit by stiffer low speed damping.  Anti roll bars will have more effect on relatively long duration "Higher speed corners or ones where you can keep the car going in the one direction".
Firmer low speed compression and rebound damping will dampen / slow down the rate of roll a bit.  The car should feel more responsive as the stiffer dampers will cause the chassis to transfer load quicker.  The increased rebound will reduce chassis ringing / oscillations.
Poly bushes to the front upper control arms fitted with concentric adjustment will allow caster and camber adjustment.  The correct caster and camber will promote a better (larger) tyre contact patch. 
The issue you are describing is more dynamic and transient.  Thicker antiroll bars will do very little to improve transient response.   They'll stuff the ride for little gain.